首页
登录
职称英语
Conventional wisdom says trees are good for the environment. They absorb car
Conventional wisdom says trees are good for the environment. They absorb car
游客
2024-08-21
44
管理
问题
Conventional wisdom says trees are good for the environment. They absorb carbon dioxide—a greenhouse gas—from the atmosphere and store it as carbon while releasing oxygen, a process for which forests have been called "the lungs of the planet". The roots of trees have been thought to trap sediments and nutrients in the soil. Trees have also been credited with steadying the flow of these rivers, keeping it relatively constant through wet and dry seasons, thus preventing both drought and flooding. It is all nonsense, concludes a research published this week. A four-year international study led by researchers at the University of Newcastle, in Britain, and the Free University of Amsterdam, identifies several myths about the link between forests and water. For example, in arid and semiarid areas, trees consume far more water than they trap. And it is not the trees that catch sediments and nutrients, and steady the flow of the rivers, but the fact that the soil has not been compressed.
The World Commission on Water estimates that the demand for water will increase by around 50% in the next 30 years. Moreover, around 4 billion people—one half of the world’s population— will live in conditions of severe water stress, meaning they will not have enough water for drinking and washing to stay healthy, by 2025.
The government of South Africa has been taking a tough approach to trees since it became the first to treat water as a basic human right in 1998. Trees lose water through evaporation(the technical term is transpiration)at twice the rate of grassland or South Africa’s unique fynbos scrubland. In a scheme praised by the hydrologists, the state penalizes forestry companies for preventing this water from reaching rivers and underground aquifers.
In India, large tree-planting schemes not only lose valuable water but complicate the true problem identified by the hydrologists: the unregulated removal of water from aquifers to irrigate crops. Farmers need no permit to drill a borehole and, as most farmers receive free electricity, there is little economic control on the volume of water pumped. In the Kolar district in Karnataka, wells have dried up as the water table has plummeted from six metres to 150 metres below ground.
Questions 71—75
Complete the summary with a maximum of two words from the passage, changing the form where necessary.
It is commonly believed that trees are good for the environment, as they absorb carbon dioxide and release oxygen: the roots of trees can trap water and【R1】______ the flow of rivers. However, a recent study has found that this belief is【R2】______.
According to the research, trees lose【R3】______ water through evaporation than they trap. In South Africa, forestry companies are punished as the trees they planted prevented water from【R4】______ rivers and underground aquifers. In India, farmers drilled many wells and used the underground water to【R5】______their farmland. This has lowered water table to 150 metres below ground. Many trees have been planted and in fact these trees complicate the existing problem. [br] 【R2】
选项
答案
(all)nonsense
解析
文中第一段中间提到“It is all nonsense,concludes a research published this week”,因此填入(all)nonsense。
转载请注明原文地址:https://tihaiku.com/zcyy/3729481.html
相关试题推荐
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Conventionalwisdomsaystreesaregoodfortheenvironment.Theyabsorbcar
Theheroofthebook,Charles,isaconventionalnineteenth-centurygentleman;t
随机试题
(1)AUanMetcalfsnewbookclaimsthattheword"OK"isAmerica’sgreatestin
说明:假定你是办公室秘书梁丽,根据下列内容拟一封邮件。内容:1.本部门定于下周五(6月25日)下午2点在一楼会议室举办部门团建活动;
Thesocialeffectsofjob-sharingarelikelytobebeneficial,sinceitatte
[originaltext]W:Howdoyoufeelaboutthefutureofartificialintelligence?P
纳米粒属于()A:溶液型 B:胶体溶剂型 C:固体分散型 D:气体分散型
香港游客丢失港澳居民来往内地通行证,经过办理有关手续,由公安机关出入境管理部门签
正常人体心脏节律性收缩的起搏点位于()。A.窦房结 B.结间束 C
省级药品不良反应监测中心应当及时对死亡病例进行分析、评价,并将评价结果报送A.卫
受托人职责终止的,信托文件未规定的,由受益人选任新受托人。()
下列属于能够提供总括的会计信息的账簿是()。A、总分类账 B、两栏式账
最新回复
(
0
)